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kriswiner / MPU9250

Arduino sketches for MPU9250 9DoF with AHRS sensor fusion
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Two MPU9250s: read magnetometer #453

Open ChiaraBolgiani opened 3 years ago

ChiaraBolgiani commented 3 years ago

I am using two Grove IMU 9DOF (https://wiki.seeedstudio.com/Grove-IMU_9DOF_v2.0/) and I want to read angles from both of them. I already have one on address 0x69 and the other on the default 0x68 as explained in the Grove IMU. I can read the angles nicely when I use each IMU alone with the basicAHRS code. I am trying to use the dualMPU9250_ladybug code but with an Arduino nano. I know the interrupts pin on the nano are different and I changed them to 2 and 3. I still can't read any data from the sensor. I am now wondering if my wiring is correct.

For both sensor I have:

sensor | arduino 3.3V | VCC GND | GND SDA | SDA + 4.7k pullup resistor SCL | SCL + 4.7k pullup resistor

Am I missing something? I also don't have the RTC library and therefore commented everything involving it in my code, but I don't expect it creating some issues, or does it? Thank you in advance for your help.

kriswiner commented 3 years ago

Are you sure you have the interrupts right? I would try simply polling the sensor data (comment out the check for interrupt flag == true) to see if you can read data.

On Fri, Jan 22, 2021 at 8:48 AM ChiaraBolgiani notifications@github.com wrote:

I am using two Grove IMU 9DOF ( https://wiki.seeedstudio.com/Grove-IMU_9DOF_v2.0/ http://url) and I want to read angles from both of them. I already have one on address 0x69 and the other on the default 0x68 as explained in the Grove IMU. I can read the angles nicely when I use each IMU alone with the basicAHRS code. I am trying to use the dualMPU9250_ladybug code but with an Arduino nano. I know the interrupts pin on the nano are different and I changed them to 2 and 3. I still can't read any data from the sensor. I am now wondering if my wiring is correct.

For both sensor I have:

sensor | arduino 3.3V | VCC GND | GND SDA | SDA + 4.7k pullup resistor SCL | SCL + 4.7k pullup resistor

Am I missing something? I also don't have the RTC library and therefore commented everything involving it in my code, but I don't expect it creating some issues, or does it? Thank you in advance for your help.

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ChiaraBolgiani commented 3 years ago

Yes, without the interrupts I can get nice readings. Why are they not working though? I don't necessarily need them but it would be nice to understand what mistake I'm making. Thanks again for your help.

kriswiner commented 3 years ago

Why are they not working though?

Probably because you don't have them configured properly.

On Mon, Jan 25, 2021 at 12:47 AM ChiaraBolgiani notifications@github.com wrote:

Yes, without the interrupts I can get nice readings. Why are they not working though? I don't necessarily need them but it would be nice to understand what mistake I'm making. Thanks again for your help.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/kriswiner/MPU9250/issues/453#issuecomment-766654158, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABTDLKQ42HSDFN7P2GKXXXLS3UVZXANCNFSM4WOX67CA .